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We present the direct measurement and modeling of the sensitivity limit of an integrated refractive index sensor for the detection of molecular monolayers. Direct UV writing can be used to fabricate a wide range of integrated optical devices particularly Bragg gratings. These Bragg gratings are inherently sensitive to temperature and strain. By etching a portion of the cladding, the mode within the...
This work demonstrates a Bragg grating sensor with high sensitivity to refractive index. This device has the potential to detect down to the monolayer resolutions and to see subtle chemical surface effects. Moreover, this study shall discuss the latest development to introduce chemical specificity through functional self assembled monolayer surfaces and the exploration of the chemical interactions...
An exposed Bragg grating incorporated into a planar waveguide was used to form a refractive index sensor. The high sensitivity to subtle changes allowed the study of surface functionalisation and binding within a microfluidic system.
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